Computercraft - Auto Birch Wood Farmer Code

- Added a function to wait for saplings if selected (BETA)
- If there is a chest placed behind the turtle, it will store everything except the fuel, saplings and dirt after each run.

-- Still need to implement the redstone signal
-- Still need to add a function to broadcast logs to computer / monitor for viewing without getting close to turtle
-- Still need to implement wireless computer communication for multiple loggers